A man and a woman are shipwrecked on a deserted island. over time the man falls in love with the woman but cannot tell her.
The two of them prepare a fire to light on the top of the island to attract the attention of passing ships.
The man sees a passing ship but does not light the fire to be alone with the woman on the island.
The woman realize this and lights the fire.
Does anyone remember this movie?
Swept Away (2002) ?
Other possibility is "Trouble in Paradise" (1989)
"Shipwrecked on an island, a woman finds it difficult to deal with an uncouth beachcombing hermit."
there was no one in the movie except a man and a woman
Six Days Seven Nights?
"Travolti da un insolito destino nell'azzurro mare d'agosto" (1974) is similar too.
I'll watch swept away and let you know.
Not sure if it's in italian or not but I'm sure Madonna isn't in it :)
Let me know if you find this movie.
"Bare Essentials" is possible too.
I remember the movie Blue Lagoon. there was a shipwreck and a brother and sister who survived together on the island and then they had a child. Aren't you talking about this movie?